EP 0810611 A1 19971203 - High temperature thermistor containing rare earth metals
Title (en)
High temperature thermistor containing rare earth metals
Title (de)
Seltener metallhaltiger Hochtemperatur-Thermistor
Title (fr)
Thermistance pour des températures élevées contenant des métaux du groupe de terres rares
Publication
Application
Priority
DE 19621934 A 19960531
Abstract (en)
A semiconductor ceramic, consisting of a rare earth metal oxide solid solution of composition (I), is new. (YaGdbSmcTbd)2O3 (I), in which a = 0 to 0.995, b = 0 to 0.995, c = 0 to 0.995, d = 0.01 to 0.995 and a = greater than 0, when b = 0, or b = greater than 0, when a = 0. Preferably, the oxide solid solution has a cubic crystalline structure of C-M2O3 type and may contain further doping elements selected from Nd, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu. Also claimed is a thermistor with a semiconductor ceramic of the above composition (I).
Abstract (de)
Ein Thermistor mit einer Halbleiterkeramik aus einem Mischkristalloxid der Seltenerdmetalle der Zusammensetzung [YaGdbSmcTbd]2O3 mit 0 <= a <= 0,995, 0 <= b <= 0,995, 0 <= c <= 0,995, 0,01 <= d <= 0,995 und a > 0, wenn b = 0 oder, b > 0, wenn a = 0 ist hochtemperaturstabil und kann bis zu Temperaturen von 1100°C verwendet werden. <IMAGE>
IPC 1-7
IPC 8 full level
C04B 35/50 (2006.01); H01C 7/04 (2006.01)
CPC (source: EP KR US)
H01C 7/02 (2013.01 - KR); H01C 7/043 (2013.01 - EP US)
Citation (search report)
- [A] US 4126583 A 19781121 - WALTER ULRICH
- [A] FR 2309961 A1 19761126 - SIEMENS AG [DE]
- [A] FR 2309963 A1 19761126 - SIEMENS AG [DE]
- [A] FR 2309962 A1 19761126 - SIEMENS AG [DE]
- [A] FR 2234639 A1 19750117 - NGK SPARK PLUG CO [JP]
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0810611 A1 19971203; EP 0810611 B1 19991006; CN 1118834 C 20030820; CN 1175778 A 19980311; DE 19621934 A1 19971204; DE 59700516 D1 19991111; JP H1087367 A 19980407; KR 100427900 B1 20040804; KR 970076910 A 19971212; TW 353233 B 19990221; US 5955937 A 19990921
DOCDB simple family (application)
EP 97201494 A 19970516; CN 97105512 A 19970530; DE 19621934 A 19960531; DE 59700516 T 19970516; JP 14003197 A 19970529; KR 19970022085 A 19970530; TW 86108431 A 19970617; US 86399097 A 19970528